How can i make far objects look fading or transparent?

Say i have a 3D rectangle, rotated 45 degrees as in the attached screenshot. I would like the lines and the far edge (A) to look fading. Moreover, when i rotate the camera, i want the 'new' far lines and edges to look fading. So if B will be in the place if A, B and the lines to B will look fading. How can i do that?

I'm not familiar with openGL ES but I hope you can use shaders there, because then this will be an easy task:
You simply need to compute the distance between the geometry you draw and the camera, and set the opacity value in the fragment shader according to this distance.

Untested, but this code should gradually increase transparency until the objects are 1000 (no unit) away. You can of course adapt this if you add non-linear fading or fading that starts only at a minimum distance of 500.

I'm not familiar with openGL ES but I hope you can use shaders there, because then this will be an easy task:
You simply need to compute the distance between the geometry you draw and the camera, and set the opacity value in the fragment shader according to this distance.

Untested, but this code should gradually increase transparency until the objects are 1000 (no unit) away. You can of course adapt this if you add non-linear fading or fading that starts only at a minimum distance of 500.